#include<bits/stdc++.h>

using namespace std;
using ll=long long;
#define rep2(i, a, n) for(int i = (a); i < (n); i++)
#define rep(i, n) rep2(i,0,n)

int main(){
  cin.tie(nullptr);ios_base::sync_with_stdio(false);
  int n,m,k;
  cin>>n>>m>>k;
  char op;
  cin>>op;
  vector<int> b(m),a(n);
  rep(i,m)cin>>b[i];
  rep(i,n)cin>>a[i];
  ll ans=0;
  if(op=='+'){
    rep(i,n)ans+=(a[i]*n)%k;
    rep(i,m)ans+=(b[i]*m)%k;
  }else{
    ll hoge=0,shake=0;
    rep(i,n)hoge+=a[i];
    rep(i,m)shake+=b[i];
    ans=(hoge*shake)%k;
  }
  cout<<ans<<endl;
}